1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org> 5 * 6 * This software was developed by SRI International and the University of 7 * Cambridge Computer Laboratory (Department of Computer Science and 8 * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the 9 * DARPA SSITH research programme. 10 * 11 * This software was developed by SRI International and the University of 12 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 13 * ("CTSRD"), as part of the DARPA CRASH research programme. 14 * 15 * This work was supported by Innovate UK project 105694, "Digital Security by 16 * Design (DSbD) Technology Platform Prototype". 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39#pragma once 40 41#include_next <sys/param.h> 42 43#ifndef BLKDEV_IOSIZE 44#define BLKDEV_IOSIZE PAGE_SIZE /* default block device I/O size */ 45#endif 46#ifndef DFLTPHYS 47#define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size */ 48#endif 49#ifndef MAXPHYS 50#define MAXPHYS (128 * 1024) /* max raw I/O transfer size */ 51#endif 52#ifndef MAXDUMPPGS 53#define MAXDUMPPGS (DFLTPHYS / PAGE_SIZE) 54#endif 55 56#ifndef MCLSHIFT 57#define MCLSHIFT 11 /* convert bytes to mbuf clusters */ 58#endif 59 60#ifndef MCLBYTES 61#define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */ 62#endif 63 64#ifndef __PAST_END 65#define __PAST_END(array, offset) (((__typeof__(*(array)) *)(array))[offset]) 66#endif 67 68#ifndef nitems 69// https://stackoverflow.com/questions/1598773/is-there-a-standard-function-in-c-that-would-return-the-length-of-an-array/1598827#1598827 70#define nitems(x) \ 71 ((sizeof(x) / sizeof(0 [x])) / ((size_t)(!(sizeof(x) % sizeof(0 [x]))))) 72#endif 73 74#ifndef rounddown 75#define rounddown(x, y) (((x) / (y)) * (y)) 76#endif 77#ifndef rounddown2 78#define rounddown2(x, y) ((x) & (~((y)-1))) /* if y is power of two */ 79#endif 80#ifndef roundup 81#define roundup(x, y) ((((x) + ((y)-1)) / (y)) * (y)) /* to any y */ 82#endif 83#ifndef roundup2 84#define roundup2(x, y) \ 85 (((x) + ((y)-1)) & (~((y)-1))) /* if y is powers of two */ 86#endif 87#ifndef powerof2 88#define powerof2(x) ((((x)-1) & (x)) == 0) 89#endif 90